CN201708815U - Networked structure of telecontrol digital channel - Google Patents
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- CN201708815U CN201708815U CN 201020236738 CN201020236738U CN201708815U CN 201708815 U CN201708815 U CN 201708815U CN 201020236738 CN201020236738 CN 201020236738 CN 201020236738 U CN201020236738 U CN 201020236738U CN 201708815 U CN201708815 U CN 201708815U
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Abstract
本实用新型公开了一种远动数字通道网络化结构，所述的网络化结构在RTU的机柜上加装厂站小型终端服务器，并通过网络接入地区调度自动化系统的前置子系统，前置子系统设置采集前置机和前置交换机。采用上述技术方案，可以提高数字通道的传输波特率，因为网络化改造后串口数字信号只在RTU屏内或调度主站前置通道柜近距离通信，干扰少，通信质量好。具有可远程监视、远程网管等突出优点，增加的设备，可靠性高，通道中断时故障点定位快速准确，远动自动化和通信专业责任界定清楚，设备替换方便，恢复时间短，可有效提高远动系统可用率指标。
The utility model discloses a telecontrol digital channel network structure. In the network structure, a factory station small terminal server is installed on the cabinet of the RTU, and the pre-subsystem of the regional dispatching automation system is connected through the network. Set the subsystem to set the acquisition front-end processor and front-end switch. Adopting the above-mentioned technical solution can increase the transmission baud rate of the digital channel, because after the network transformation, the serial port digital signal only communicates in the RTU screen or the channel cabinet in front of the dispatching master station at short distance, with less interference and good communication quality. It has outstanding advantages such as remote monitoring and remote network management, increased equipment, high reliability, fast and accurate fault location when the channel is interrupted, clear definition of professional responsibilities for telecontrol automation and communication, convenient equipment replacement, and short recovery time, which can effectively improve remote control. Dynamic system availability index.
Description
Technical field
The utility model belongs to the technical field of power network schedule automation, relates to the technology of telemechanical digital channel, and more particularly, the utility model relates to telemechanical digital channel networking structure.
Background technology
Statistics in recent years shows that the main cause that influences the telecontrol system availability factor remains passage and interrupts.Therefore, the construction of reinforcement telecontrol channel and perfect is the key that improves whole dispatch automated system operation level.
For not carrying out the old transformer station that comprehensive automation system of transformer substation is transformed as yet, telemechanical RTU (remote terminal unit, Remote Terminal Unit) device does not support that generally IEC60870-5-104 network stipulations, teletransmission digital channel commonly used are traditional asynchronous serial communication RS-232C interfaces.Though it has interface convenience, standardization, normalized advantage, weak point is: communication coverage short (≤15 meters); Be easy to generate interference between each signal of interface.So, generally to install the electrical isolation that photoisolator improves transmission range and realizes both sides' equipment room additional at RTU and communication equipment both sides.And most of light promptly have only photoelectricity isolation ability operate as normal when descending signal has level triggers every all being from the power taking of telemechanical downstream signal, and upward signal is sent; In control centre's end communication equipment side, after the telemechanical digital signal restored, be again through light every linking to each other with scheduling station front-end system passage cabinet.Swivel link is many in the transmission course, device category is many, is prone to that the distributing frame clamping is not firm, receiving and transmitting signal and the positive and negative Problem-Error of putting upside down of level thereof.The digital channel signal quality is judged complexity in addition, needs to receive the true form interpretation by the oscilloscope observation or with notebook computer; Have no progeny in the passage, remote automation and Communication Personnel's malfunction elimination, debugging cooperate inconvenient, and recovery time is longer, has influenced the telecontrol system availability factor.
In recent years, development along with power telecom network, big capacity, high-quality optical fiber communication looped network are substantially transferred administration transformer station with covering, for telemechanical digital channel networking transformation provides safety, stable, reliable hardware transmission platform, also be that the telemechanical digital channel changes the precondition that networking is transmitted by routine.
The utility model content
Problem to be solved in the utility model provides a kind of telemechanical digital channel networking structure, its objective is the availability factor that improves telecontrol system.
To achieve these goals, the technical scheme taked of the utility model is:
Telemechanical digital channel networking structure provided by the utility model, described networked structure installs factory's station Miniature Terminal server additional on the rack of RTU digital channel, and the front subsystem by the network insertion regional dispatch automation system, described front subsystem is provided with gathers front end processor and preposition switch.
The RS232 serial ports of described factory station Miniature Terminal server intersects with the transmitting-receiving of RTU digital channel and links to each other.
For making the utility model more perfect, more detailed and concrete three kinds of embodiments below also further having proposed, to obtain best technique effect, realize goal of the invention better, and demonstrate fully novelty of the present utility model and creativeness:
1, described network is point-to-point 2M private network, and described point-to-point 2M private network adopts the network configuration of E1 special line+Ethernet bridge conversion.Described factory station Miniature Terminal server is industrial four serial port device network servers, and its model is MOXA DE-304.
2, described network is the electric power data communication network, and transfers the main website side that main website Miniature Terminal server is set on ground, and described main website Miniature Terminal server is identical with the model of described factory station Miniature Terminal server.Described main website Miniature Terminal server and described factory station Miniature Terminal server are that single serial ports changes the Ethernet transducer, and its model is MOXADE-311.
3, described network is regional dispatching data private network, and described regional dispatching data private network transfers the center active router to insert the front subsystem of regional dispatch automation system by ground.Described factory station Miniature Terminal server is industrial four serial port device network servers, and its model is MOXA DE-304.Be provided with hardware firewall transferring between the preposition switch of center active router and main website describedly.The model of described hardware firewall is (Topsec) NGFW4000 type; The WAN mouth of described hardware firewall transfers real-time mouthful of the center active router to link to each other with ground, and the LAN mouth of described hardware firewall is connected with described preposition switch.
The utility model adopts technique scheme, can improve the Transmission bit rate of digital channel, because networking is transformed back serial ports digital signal only in the RTU screen or the short-range communication of scheduling station analog channel cabinet, disturb few, good communication quality, baud rate can be set as RTU and the maximum supported value of front-end system (terminal server serial ports speed is supported 50bps-230.4Kbps), generally can be set as 9600BPS.But have outstanding advantages such as telemonitoring, remote network management, the terminal server that increases, Ethernet bridge, fire compartment wall etc. all are the ripe good standard devices of replaceability, the reliability height, when passage interrupts localization of fault quick and precisely, remote automation and communication speciality responsibility judgment are clear, equipment is replaced convenient, recovery time is short, can effectively improve telecontrol system availability factor index, comply with the developing direction of data transmission networkization, good prospects for application and promotional value are arranged.Three kinds of transmission plans have their own characteristics each, and can be applicable to on-the-spot different network condition, can select targetedly to use.
Description of drawings
Below expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure are made brief description:
Fig. 1 is the structural representation of the utility model based on point-to-point 2M private network scheme;
Fig. 2 is the structural representation of the utility model based on the paired terminal server scheme that inserts of electric power data communication network;
Fig. 3 is the structural representation of the utility model based on area power dispatching data private network scheme.
Be labeled as among the figure:
1, SCADA switch, 2, gather front end processor, 3, preposition switch, 4, main website terminal server, 5, Ethernet bridge, 6, point-to-point 2M private network, 7, factory station Miniature Terminal server, 8, RTU digital channel, 9, main website Miniature Terminal server, 10, the electric power data communication network, 11, hardware firewall, 12, transfer the center active router, 13, regional dispatching data private network, 14, gps clock.
Embodiment
Contrast accompanying drawing below, by description to embodiment, to the effect of the mutual alignment between embodiment of the present utility model such as the related each several part and annexation, each several part and operation principle etc., be described in further detail, inventive concept of the present utility model, technical scheme had more complete, accurate and deep understanding to help those skilled in the art.
As Fig. 1, Fig. 2 and the expressed structure of the present utility model of Fig. 3, the utility model is a telemechanical digital channel networking structure.
In order to solve the problem that exists at the described present known technology of this specification background technology part and to overcome its defective, realize the goal of the invention of the availability factor of raising telecontrol system, the technical scheme that the utility model is taked is:
As shown in drawings, networked structure described in the utility model is provided with factory's station Miniature Terminal server 7 on the rack of RTU digital channel 8, and the front subsystem by the network insertion regional dispatch automation system, described front subsystem is provided with gathers front end processor 2 and preposition switch 3.
Described collection front end processor 2 is connected with the SCADA switch by network, and each is gathered between the front end processor and realizes clock synchronization by gps clock 14.
The RS232 serial ports of above-described factory station Miniature Terminal server 7 intersects with 8 transmitting-receivings of RTU digital channel and links to each other.Can be by on the RTU rack, installing the Miniature Terminal server additional, intersect with RTU digital channel 8 with the RS232 serial ports of this terminal server and to link to each other, generally only need meet TXD, RXD, three lines of GND.Owing to be closely to link to each other at indoor same screen, disturb little, so need not consider to install additional light every with the digital channel lightning protection device, the network interface of terminal server is by point-to-point 2M private network, or regional dispatching data network (SPD net), even the front subsystem of electric power data communication network (SPT net) access regional dispatch automation system, realize the networking transmission of conventional digital channel.
The telemechanical stipulations that the RTU digital channel is used still remain unchanged, and can effectively solve the drawback of the conventional transmission of digital channel.
Below be three concrete exemplifying embodiments that the utility model proposes at above technical scheme.
Embodiment one (based on the terminal server scheme of point-to-point 2M private network):
As shown in Figure 1, network described in the utility model is point-to-point 2M private network 6, and described point-to-point 2M private network 6 adopts the network configuration of E1 special line+Ethernet bridge 5 conversions.
Terminal server be for the RS-232 terminal to the communication interface protocol converter of finishing data transaction between the TCP/IP, form by a plurality of serial line interfaces (RS232/422/485) and a network interface (TCP/IP), the serial ports end can connect a plurality of serial equipments, and the port end can directly connect Ethernet.Each terminal server all has own independent IP address, is equivalent to precomputer+multi-serial-port card on system connects.Data acquisition system based on terminal server meets international trend, extensively adopted by current electric power scheduling automatization systems at different levels and transformer station's centralized-control center (concentrator station), insert the solution of SCADA/EMS real-time system as RTU (distant place data acquisition unit) by serial communication.
In the present embodiment, described factory station Miniature Terminal server 7 is industrial four serial port device network servers, and its model is MOXA DE-304.
Terminal server scheme based on point-to-point 2M private network, need on the RTU rack, install the Miniature Terminal server additional on the hardware, industrial four serial port device network servers of MOXADE-304 as the production of Taiwan 404 Sci-Tech Co., Ltd., intersect with the transmitting-receiving of one of them RS232 serial ports and RTU digital channel and to link to each other, its network interface directly inserts the preposition switch of regional dispatch automation system by the point-to-point private network of optical fiber communication (generally adopting the network architecture of E1 special line+Ethernet bridge conversion), makes up schematic diagram as shown in Figure 1.
On the software, terminal server is generally supported local push-botton operation and Remote configuration, recommend to use TELNET login Remote configuration, at first want static ip address, subnet mask, the gateway of configurating terminal server, can equally be provided with reference to the preposition terminal server that is placed on main website;
Inserting that operation of serial-port pattern of RTU should select TCP Server (under this working method, terminal server is as the TCP server end, on the tcp port of appointment, monitor the connection request of the identical tcp port of front end processor, after connecting foundation, just can transceive data), can be provided with as required for TCP PORT number, as establish 2403 etc., because of port numbers must be consistent with the front end processor agreement as TCP CLIENT end, so should note should not repeating with the port numbers that front end processor has used; Configurations such as the baud rate of serial ports, data bit, position of rest then will with the RTU digital channel that parameter is set is consistent.
The scheme of present embodiment is equivalent to ground is transferred the long-range transformer station that extends to of certain terminal server of front-end system in fact, software and hardware architecture essence does not become, change slightly and dispose (as setting the IP address of factory's station terminal server so main website front-end system program only need be done, two front end processor tcp port numbers of communicating by letter etc.) just can insert with factory station terminal server, and owing to be end-to-end telemechanical communication private network, so the configuration of the network parameter of this terminal server can be decided by the front-end system network topology fully, generally be set as with front end processor in the same network segment.
Embodiment two (based on access terminal the in pairs scheme of server of SPT net):
As shown in Figure 2, the described network of technique scheme is an electric power data communication network 10, be SPT net, and transfer the main website side that main website Miniature Terminal server 9 is set that the stand model of Miniature Terminal server 7 of described main website Miniature Terminal server 9 and described factory is identical on ground.
The technical scheme of present embodiment need not change the setting of regional dispatch automation system main website, working mechanism converts telemechanical digital channel rs 232 serial interface signal to ICP/IP protocol by Network Transmission through terminal server, transfer the main website side to convert RS232 signal access analog channel cabinet to again on ground, make up schematic diagram as shown in Figure 2 with the terminal server of a same model.
In the present embodiment, described main website Miniature Terminal server 9 and described factory station Miniature Terminal server 7 are that single serial ports changes the Ethernet transducer, and its model is MOXADE-311.
Terminal server can select for use the single serial ports of MOXADE-311 to change the Ethernet transducer, and two are used in pairs, all are operated under the paired pattern of PAIR CONNECTION, hold as MASTER for one, one connects by establishing the other side IP address mutually as the SLAVE end, realizes the two-way transparent transmission of data.Its essence is equivalent to transform the connection of the bus between two serial equipments as the TCP/IP network and connects.
Owing to be still by serial ports with the main website side in transformer station and use the special-purpose stipulations of telemechanical to communicate by letter with real-time system, so its security requirement to network is not high, if the existing electric power data communication network (SPT net) based on the transmit management information system (MIS) and the office automation system (OA) of transformer station is stable, then can build the 2M private network fully, it also is feasible being transferred to scheduling station with regard to ground warp electric power data communication network.
The serial ports parameter configuration that is noted that two terminal servers of transformer station and main website side wants consistent, and network parameter disposes and will defer to transformer station and the constraint separately of main website side respectively.
Embodiment three (based on the terminal server scheme of area power dispatching data private network):
As shown in Figure 3, network described in the utility model is a regional dispatching data private network 13, and described regional dispatching data private network 13 transfers center active router 12 to insert the front subsystem of regional dispatch automation system by ground.
Usually transfer the transformer station that has jurisdiction over all to unify to have built the power dispatch data network that makes up based on SDH fiber optic loop web router 2M networking now; professional for the non-comprehensive safe II districts such as electric energy metering system, relaying protection and failure wave-recording information management system of only having carried mostly at present from conventional substation; when not possessing point-to-point 2M private network construction condition so transformer station extremely transfers, the networked transmission of digital channel can also utilize the existing power data dispatching net SPD net-VPN1 of transformer station (real-time VPN) realization.
In the present embodiment, described factory station Miniature Terminal server 7 is industrial four serial port device network servers, and its model is MOXA DE-304.
Under this scheme, the terminal server that installs additional on the RTU rack still can use embodiment one described MOXA DE-304 type, operator scheme still is TCP Server, but note that the TCP Port that selects for use should be data dispatching net and the open port numbers of fire compartment wall, its static IP, subnet mask and gateway all want the strict real-time mouthful of network segment that distributes by this substation data net router to dispose, otherwise can not stride route visit data host router, its network interface is directly linked real-time mouthful of router.
Be provided with hardware firewall 11 transferring between the preposition switch 3 of center active router 12 and main website describedly.
It is vertically interconnected to consider that this scheme belongs between control centre EMS system and the transformer station's telemechanical apparatus safe I district, can not bypass for what guarantee visit, controllability, confirmability, realize the security protection of EMS system longitudinal boundary, need between the preposition switch of the control centre of data dispatching net active router and main website, install a hardware firewall 11 additional, by reasonable utilization network static father address, destination address conversion NAT technology, two front end processor Intranet address transition can be become two virtual addresses in the real-time network segment of data dispatching host router, both realized that long-range factory station terminal server strode the access of route through the data dispatching net, and can accomplish to make the external world can't directly visit preposition Intranet again.
Above-described hardware firewall 11 can select the NGFW4000 of Topsec type for use; The WAN mouth of described hardware firewall 11 transfers real-time mouthful of center active router 12 to link to each other with ground, and the LAN mouth of described hardware firewall 11 is connected with described preposition switch 3.
More than the comparison of three embodiment technical schemes:
Three kinds of access scheme factory station sides all will increase an industrial small size terminal server, but the characteristics that all possess telemonitoring, remote network management, the remote automation personnel are at the main website front end processor or in the electric power data communication network node, by TELNET Telnet factory station terminal server, select the Monitor menu, can monitor the reception of the Terminal Service implement body serial ports that links to each other with the RTU digital channel and send the character situation.For example, if Rx char count numerical value does not change always, just can conclude that the RTU digital channel does not have signal to send, provide a method of judging the RTU upward signal intuitively to us, just can assert failure cause fast at scheduling station like this, distinguish the responsibility of remote automation, Office of the Telecommunications Authority.
In addition, by network also can online modification terminal server network terminal slogan etc. parameter configuration, change and restart (Restart) after preserving and promptly come into force.
Three kinds of access schemes can improve the Transmission bit rate of digital channel.Because networking is transformed back serial ports digital signal only in the RTU screen or the short-range communication of scheduling station analog channel cabinet, disturb few, good communication quality, baud rate can be set as RTU and the maximum supported value of front-end system (terminal server serial ports speed is supported 50bps-230.4Kbps), generally can be set as 9600BPS.
In embodiment one and embodiment three, digital signal is not limited by the front-end system baud rate without scheduling station analog channel cabinet, and the flank speed that can use is only determined by RTU.
Which kind of access scheme the user adopts to be determined on a case-by-case basis actually.
Embodiment one is based on point-to-point 2M private network, factory stands to main website and has only a fixed route, network architecture weakness, other equipment are multiplexing but network is got along well, fail safe is good, and main website front end processor software arrangements is simple, only carries low speed telemechanical digital signal (generally at 9600bps and following) on the network, channel utilization index is poor, is applicable to that power dispatch data network do not build up as yet and the transformer station that opens the private network condition arranged.
Embodiment two is based on electric power data communication public network, open conveniently, still be reduced into conventional RS232 digital signal in the main website side and insert front-end system, so need not change any program of main website front-end system and configuration, and be applicable to the traditional scheduler main website front subsystem of precomputer+multi-serial-port card mode.
Since its two terminal servers that are installed in transformer station and main website side be one main one from, establishing the IP address mutually uses in pairs, two point-to-point connections of private ip address, the message that does not meet this connection features all will be filtered, and both sides all are to use the special-purpose stipulations of telemechanical to communicate by letter with real-time system by serial ports, the packet that does not meet telemechanical stipulations characteristics can not be received utilization yet, so its security performance satisfies electric power system secondary requirement of shelter.
But, must set at the serverconfig of both sides terminal server to add in the item and crack the high maintain cryptographic of difficulty (Password), as safeguard protection in order to prevent that the terminal server configuration parameter from particularly being distorted offside IP address.
This scheme is applicable to that power dispatch data network do not build up and do not open the transformer station of private network condition as yet.
Embodiment three is based on power dispatch data network, share with safety II district operation system, has many routes control centre's active router of can leading to, and adopt hardware firewall and main website front-end system effectively to isolate, network stabilization, reliability, safe, favorable expandability, possess the telemechanical digital channel at a plurality of factories station is transformed in this way through the parallel ability that inserts main website of data network router separately, but fire compartment wall all will increase intranet and extranet address transition configuration (NAT) strategy to each factory that inserts in this way station, configuration is complicated slightly, each wraps in and all is translated into correct IP address in the fire compartment wall, mail to next stage, brought certain burden to fire compartment wall, as few by the parallel factory's station number that inserts of this scheme, this burden is inappreciable.
When conditions being possessed, this scheme should be three first-selections in the scheme.
Conclusion:
In sum, three kinds of transmission plans of telemechanical digital channel networking of above-mentioned employing terminal server mode, but has telemonitoring, outstanding advantage such as remote network management, the terminal server that increases, Ethernet bridge, fire compartment walls etc. all are the ripe good standard devices of replaceability, the reliability height, localization of fault quick and precisely when passage interrupted, remote automation and communication speciality responsibility judgment are clear, equipment is replaced convenient, recovery time is short, can effectively improve telecontrol system availability factor index, comply with the developing direction of data transmission networkization, good prospects for application and promotional value are arranged.Three kinds of transmission plans have their own characteristics each, and can be applicable to on-the-spot different network condition, and the user can select to use targetedly.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or design of the present utility model and technical scheme are directly applied to other occasion without improving, all within protection range of the present utility model.
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| CN 201020236738 CN201708815U (en) | 2010-06-23 | 2010-06-23 | Networked structure of telecontrol digital channel |
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| CN 201020236738 CN201708815U (en) | 2010-06-23 | 2010-06-23 | Networked structure of telecontrol digital channel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103150282A (en) * | 2013-03-29 | 2013-06-12 | 深圳市磊科实业有限公司 | Method for automatically configuring RS422/RS485 through flow control parameters and system for implementing same |
| CN105187550A (en) * | 2015-09-28 | 2015-12-23 | 上海宝钢节能环保技术有限公司 | Remote acquisition and communication system for power equipment data and method |
| CN105406587A (en) * | 2015-10-19 | 2016-03-16 | 国家电网公司 | FES system |
| CN116489013A (en) * | 2023-03-20 | 2023-07-25 | 国网湖北省电力有限公司随州供电公司 | A Method of Shortening the System Integration Time of Prefectural-level Dispatching Control System Construction |
-
2010
- 2010-06-23 CN CN 201020236738 patent/CN201708815U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103150282A (en) * | 2013-03-29 | 2013-06-12 | 深圳市磊科实业有限公司 | Method for automatically configuring RS422/RS485 through flow control parameters and system for implementing same |
| CN105187550A (en) * | 2015-09-28 | 2015-12-23 | 上海宝钢节能环保技术有限公司 | Remote acquisition and communication system for power equipment data and method |
| CN105406587A (en) * | 2015-10-19 | 2016-03-16 | 国家电网公司 | FES system |
| CN116489013A (en) * | 2023-03-20 | 2023-07-25 | 国网湖北省电力有限公司随州供电公司 | A Method of Shortening the System Integration Time of Prefectural-level Dispatching Control System Construction |
| CN116489013B (en) * | 2023-03-20 | 2024-04-05 | 国网湖北省电力有限公司随州供电公司 | A method to shorten the system integration time of building a local dispatching control system |
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